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Methodologies Guidebook on Calculating BM/OM Ratios: Theoretical Foundations and Applications

This guidebook by Climate Experts Ltd., authored by Naoki Matsuo, focuses on the methodologies for calculating the Build Margin (BM) and Operating Margin (OM) ratios, crucial for emission factor assessments in climate projects. It outlines the necessary information for establishing baseline scenarios and details the calculation methods for emission factors. Key examples illustrate the displacement effects and emphasize the importance of understanding conventional methodologies. The publication aims to equip practitioners with the knowledge required to effectively implement these calculations in their projects.

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Methodologies Guidebook on Calculating BM/OM Ratios: Theoretical Foundations and Applications

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  1. Methodologies Guidebook CDM Released! How to Calculate BM/OM Ratio?— Theoretical Basis and Its Application — Climate Experts Ltd. Naoki Matsuo n_matsuo@climate-experts.info

  2. What information is needed? • Conventional Methodologies • Only calculation method of EF (emission factor) is provided • Little consideration of “What is the Baseline Scenario” • Important Information: • Which measures (plants) would be used to provide the electricity to meet the demand? • Capacity/Fuel/Operation/When? (for BM) • How? (for OM) Shall the Methodology provide the steps “How to identify the Baseline Scenario” ?

  3. A Simple Example I • Scenarios: • PJS: NG: 100 MW (EFNG) • BLS: Coal: 60 MW (EFCoal) identification needed! • This means that • the project replaces the installation plan of 60MW coal fired power plant, or • postpone the power development plan, which may be by coal fired power plant(s) with 60% of the project capacity (for a while).

  4. A Simple Example II PJS BLS OM • Build Margin Component: • 60MW / 100MW = 0.6 • Operating Margin Component: • (100MW – 60MW) / 100MW = 0.4 • Emission Factor of the Displacement Effect • EFDisplacement = 0.4·EFGrid(OM) + 0.6·(EFCoal – EFNG) • Emission Reductions = ElectricityNG· EFDisplacement • Assumption • Operation pattern of Coal and NG are identical BM NG 100 MW Coal 60 MW

  5. Formula • Assumption • Operation pattern of PJ and BL plants are identical • In case operation pattern is different, generated electricity is used, instead of capacity. (not easy to obtain BL plant’s electricity generation because it depends on the grid operation method)

  6. Theory I

  7. Theory II

  8. CD-ROM (E-Card) available !

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